Mavenir Systems, Inc.

A method for optimizing coexistence of low latency, low loss and scalable throughput (L4S) traffic and non-L4S traffic in a 5G wireless system is provided, which method includes one of: a) performing one of i) a flow control between a centralized unit (CU) and a distributed unit (DU), or ii) radio resource management at the DU, to reduce latency experienced by the L4S traffic; or b) performing one of iii) a flow control between the CU and the DU to facilitate greater frequency of transmission of non-L4S traffic from CU-user plane (CU-UP) to the DU, or iv) radio resource management at the DU, to reduce a scheduling priority metric of a logical channel for the L4S traffic relative to a scheduling priority metric of a logical channel for the non-L4S traffic. To reduce latency of the L4S traffic, the L4S traffic scheduling priority is increased relative to the non-L4S traffic.

A system and method of operating an Open Radio Access Network (O-RAN, in which O-RAN the system includes: a baseband unit (BBU) having an O-RAN centralized unit (O-CU) and an O-RAN distributed unit (O-DU); an O-RAN radio unit (O-RU) remote from the BBU; and a fronthaul interface between the O-RU and the BBU. A functional split of O-RAN functions respectively assigned to O-RU and O-DU for the fronthaul interface between the BBU and the O-RU is different for downlink (DL) and uplink (UL) so that at least one of i) demodulation reference signal (DM-RS)-based channel estimation is performed by the O-DU in the DL and by the O-RU in the UL, ii) equalization is performed by the O-DU in the DL and by the O-RU in the UL, and iii) demodulation is performed by the O-DU in the DL and by the O-RU in the UL.

Minimizing signaling traffic between a User Plane (UP) and a Control Plane (CP), where Policy and Charging Function/Policy and Charging Rule Function (PCF/PCRF) software transmits a first and a second Policy and Charging Control rule (PCCRule1 and PCCRule2) to CP equipment. The CP equipment installs both PCCRule1 and PCCRule2 on UP equipment as UPRule1 and UPRule2 respectively, where UPRule1 is set as active during a first time period and the UPRule2 set as active during a second time period. User Plane Function (UPF) software matching data traffic with a Packet Detection Rule (PDR) to generate identified traffic during the first and second time periods and automatically redirecting data traffic to a predetermined location at the expiration of the first and second time periods respectively. UPRule1 and UPRule2 are automatically enabled and disabled alternatively after expiration of their respective timers by the UPF software.

A method is provided for enabling Narrowband Internet of Things (NBIOT) transport over fronthaul (FH) interface between distributed unit (DU) and radio unit (RU) for at least one of 4G Long Term Evolution (LTE) network and 5G New Radio (NR) network, which method includes: receiving, by an RU capable of at least one of NBIOT inband mode and NBIOT guardband mode, i) at least one of LTE and NR in-phase and quadrature (IQ) samples associated with a first endpoint, and ii) NBIOT IQ samples associated with a second endpoint; and configuring the RU functionality to be able to combine, in at least one of frequency domain and time domain, i) the at least one of LTE and NR in-phase and quadrature (IQ) samples associated with a first endpoint, and ii) the NBIOT IQ samples associated with a second endpoint.

A Shared Cell (SC) Controller uses deployment information, radio resource utilization measurements, cell load measurements, signal quality measurement, operator's policies and radio capabilities to make decisions on system configuration, re-configuration, and channel allocation related to the Shared Cell groups. The SC Controller may also use artificial intelligence/machine learning to predict future system state when making decisions on system configuration and channel allocation. The SC Controller can be implemented in the context of using a CBRS system, the ORAN architecture, and the Shared Cell group of Radio Units (RUs). SC Controller can be implemented as part of the Non-Real Time Radio Intelligent Controller (Non-RT RIC). The SC Controller interfaces with the Citizens Broadband Radio Service Device (CBSD) Controller, and the SC Controller sends the Shared Cell group information to the O-RU Controller so that the O-RU Controller can configure the radio components.

There is provided a method for a session audit in a communication system having a first plane and a second plane. The method can be employed in a case in which the first plane is a control plane and the second plane is a user plane, or a case in which the first plane is a user plane and the second plane is a control plane. The first plane performs operations of (1) sending to the second plane, an association update request that contains a first vendor-specific information element (IE) having (a) a bit set to indicate a desire for a single control plane (CP) fully-qualified session identification (CP F-SEID), and (b) a CP F-SEID, and (2) receiving from the second plane, an association update response that contains a second vendor-specific IE having (a) the CP F-SEID, and (b) a mapped user plane (UP) fully-qualified session identification (UP F-SEID).

A method for measuring radio interference at a center Citizens Broadband Radio Service (CBRS) device (CBSD) of a selected network operator operating one of a 4G Long Term Evolution (LTE) network or a 5G New Radio (NR) network, includes: instructing, by a radio measurement controller, the center CBSD to perform measurement of radio interference caused by an interfering radio source; instructing, by the radio measurement controller, at least one neighboring CBSD to stop radio service for at least one coordinated blank orthogonal frequency-division multiplexing symbol (CBOS), wherein the at least one CBOS is defined by a selected frequency range and a selected blanking time in one of a subframe or a slot in one of a time division duplex (TDD) downlink (DL) configuration or a TDD uplink (UL) configuration; and processing, by an interference processor associated with the center CBSD, the measured radio interference.

Systems and methods for link adaptation and to allocate and schedule transport blocks for UE slot aggregation.

A System and method for selecting a Serving Gateway User Plane/Intermediate User Plane Function/User Plane Function (SGW-U/I-UPF/UPF) for a mobile device in a visited network node where a roaming or a non-roaming status for the mobile device is determined, an Access Point Name (APN)/Data Network Name (DNN) for the mobile device is determined, where a Serving Gateway Control Plane/Session Management Function (SGW-C/SMF) node selects a first SGW-U/I-UPF/UPF or a second SGW-U/I-UPF/UPF for the mobile device based on the determination of the mobile device being in a roaming or a non-roaming status.

A system and method for optimizing data transmission rates in telecom systems requiring very high reliability that accounts for retransmissions of data and corresponding HARQ feedback and using HARQ retransmission to: avoid packets being delayed beyond their allowed PDB for associated radio bearers, avoid increasing failure rate, and avoids increasing latency due to the stop and wait protocol employed for HARQ retransmission, by transmitting NACK via RLC protocol avoiding multiple retransmissions on receiving a HARQ NACK for a selected HARQ process.